Calamity
MediumSevere WeatherCalamity Score: 22

Severe Weather in United States

ChelanUnited StatesNOAA

This alert expired on 14 March 2026 at 06:00 UTC. It is kept here as a record.

It is the 3rd strongest of the 28 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 12 March 2026. One more was recorded here in the fortnight before it.

What the source measured

NOAA reported: Flood Watch issued March 13 at 10:32AM PDT until March 15 at 5:00PM PDT by NWS Seattle WA

Nearby, since 12 March 2026

How we know

Confirmed by 37 independent sources, including NOAA.

Our own score for this event is 22 out of 100, at 70 % confidence.

The score is ours, computed from intensity, exposed population and local history — not the source’s.

Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.

Event Data

TypeSevere Weather
SeverityMedium
Calamity Score (ours)22 / 100
Our confidence70%
Coordinates47.8000, -120.7000
Nearest CityWenatchee (51 km)
Impact Tierminor
Timestamp2026-03-13T17:32:00.000Z
Sourcehttps://api.weather.gov/alerts/urn-oid-2_49_0_1_840_0_46ac1c1135404f607e174af79cd22c1339bd0048_001_1

Score Breakdown

35
intensity
0
population
0
cascading
80
historical

Technical Details

EventFlood Watch
UrgencyFuture
CertaintyPossible
AreaDescGrays Harbor, WA; Lewis, WA; Thurston, WA
HeadlineFlood Watch issued March 13 at 10:32AM PDT until March 15 at 5:00PM PDT by NWS Seattle WA
Expires2026-03-13T23:00:00-07:00
SenderNameNWS Seattle WA
HasExactCoordsfalse
Iem TypeSummaryS
Iem Magnitude8
Iem UnitInch
Iem City4 SSW Snoqualmie Pass
Iem CountyKing
Iem StateWA
Iem WfoSEW
Iem RemarkOlallie Meadows SNOTEL.
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Safety Information

During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.

Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.

This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.

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Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.